Paper or pulp-board making machine.



No. 698,423, Pate t d l L. llnwoon.` e AP 29- |902.

PAPER 0H PULP BOARD MAKING MACHINE.

(Application led Nov. 27, 1899A (No Model.)

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UNITED STATEs PATENT (inneren.

LEONARD ATWOOD, OF PHILADELPHIA, PENNSYLVANIA.

PAPER OR PULP-BOARD MAKING MACHINE.

SPECIFICATION Aforming part of Letters Patent No. 698,428, dated April 29, 1902.

. Application led November 27,1899. Serial No. 738,401. (No model.)

To @ZZ 'whom it may concern:

Be it known that I, LEONARD ATWOOD, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements inPaper or Pulp-Board Making Machines, of which the following isa specication. 4

The object of my invention is to provide automatic means for removing sheets of paper-stock from the forming-roll of a papermaking machine. This object I attain in the following manner, reference being had to the accompanying drawings, in which- Figure l is a sectional view of sufficient of a paper-making machine to illustrate my invention, showing in elevationthe improved mechanism for removing and delivering the paper-stock from the forming-roll. Fig. 2 is a perspective view, partly in section, of the cutter-blade forming a part of my invention;

' and Fig. 3 is a view of a modification of apart of my invention.

Heretofore it has been the practice in forming sheets of paper-stock, such as wood-pulp, to form the sheet by wrapping the pulp around a forming-roll a number oftimes in order to form a tube and cutting the tube thus formed while still in a Weti condition by` running a stick or knife acrossthe same, the operator then takingtthe 'sheet `as it comes from the roll and placing it on a pile. This is-a very tedious and slow operation, each machine requiring the constant attention of an operator. By myinvention I provide means whereby the tube, is automatically out, removed from the roll or drum, and placed upon a pile,

i either on the floor or on a truck for delivery,

Without any handling by the operator.

Referring to the drawings, Ais the felt for carrying thepulp from the usual vat to the press-rolls B and C. B is the upper pressroll on whichthe pulp is wound, and C is the lower press-roll, aroundwhich the felt passes as it returns to the vat over the guide-rolls c. This is one form of paper-making machine; but it will be understood that the preliminary steps prior `tothe forming of the sheet upon the press-roll canbe modified without departing from'my invention.`

In operating the machine the paper-pulp is collected by the moldcylinderamd `transferred tothe felt. It then passes around the couch-roll w-ith the felt and is introduced between the press-,rolls B and C. The Vpressroll B being of wood or metal,the pulp will adhere to said roll and will be Wrapped around the same as it is driven, so that the pulp cylinder or tube can be formed of as manylayers of pulp as desired. In order to cut this pulp-tube and remove it from the cylinder Without interfering with the continuous operation of the machine, I provide a cutterplate D, in the present instance pivoted at d and having an arm d.

E is a cam having an abrupt depression or recess e, into which the roller cl2 on the end of the arm cl' is forced by a spring D' when the recess e is presented to the roll. The spring. D turns the cutter-plate D on its pivot and forces the edge cl3 of the same against the layers of paper-pulp on the roll, andas the roll turns in the direction of the arrow l it will drag the plate D toward itself until said plate comes in contact with a stop e', arranged adjacent to the plate D and serving to limit the movement of the same. The stop e is so set that the cutter-plate will sever the pulp, but will not come in contact with the roll. This arrangement is desirable, as Vthe roll is usually made of wood. Vhen the roll is made of metal, however, the plate D may contact with the same when cutting the pulp. The fstop c in the present instance is simplyA an adjustable screw; but it may be a fixed sto-p,iif desired. The recess e in the cam E is abrupt, so that the cutter-plate is forced toward the roll, cuts the pulp, and is drawn back quickly, so as to engage the edge of the sheet to be removed and cause it to leave the roll, and as the roll rotates the sheet will be guided by the cutter-plate onto the feed-tableF. The feed-table F, consisting of the sideframes F, (only one of which is shown,) is pivotally mounted on a shaft f, journaled in suitable bearings mounted on the frame of the paper-machine. The shaft f carries the rope or tape wheels f', and the sihaftf2 at the opposite end of the frame carries therope or f ICO Mounted in suitable bearings carried at the end of the frame F is a shaft g, which carries a series of lay-boy arms G, adapted to receive the sheets of pulp as they are delivered from the roll B, and these arms are provided with stops g', with which the sheets come in contact when they are traversed on the tapes in the direction of the arrow 2. The lay-boy arms are provided for the purpose of transferring the pulp sheets from the table F onto a suitable platform or onto a truck, as X, by means of which they may be carried away from the machine. The lay-boj1 arms are operatedinthefollowingmanner: Gearing with a pinion g2, mounted on the shaft g, is a segment H, and when this segment is moved the lay-boy arms will be turned so as to remove the sheets of paper-pulp from the feed-table F and deposit them in a pile. Mounted on the frame F of the feed-table is a slide-bar I, and carried on this bar is a slide z', whichlatter is connected, by means of a rod fZ, with the segment H, a spring Z2, also on the slide-bar I, serving to keep the parts in the normal position. To move the rod t" in order to actuate the lay-boy arms, I provide a cam K, suitably journaled in bearings 7c on the frame of the machine, and this cam serves to move a lever L, pivotally mounted below the frame of the machine and connected to the slide t' on the slide-bar I. The arm Z of the lever L is connected to the slide 'L' by means ofa link 7c', and the other arm Z of the lever L has a roller Z2, which is always in contact with the cam K. The cani K has an abrupt projection 7a2, and when this projection comes in contact with the roller on the arm Z' of the lever L it moves the same to one side, and the arm Z of the lever moving with it the rod 1," is pushed in the direction of the arrow 3, rocking the segment II, so as to rotateA the pinion g2 and turn the lay-boy arms G. The spring Z2 on the slide-bar I, acting against the adjustable stop Z3, serves to retract the slide n as soon as the projection on the cam K moves out of engagement with the arm Z of the lever L and the parts are returned to their normal position and the lay-boys are ready to receive another sheet of paper-pulp.

Referring again to the mechanism for operating the cutter-plate D, its cam is driven from the press-roll B by means of a belt or gearing, and the gearing may be varied according to the number of layers of paperpulp desired to be formed upon the roll. By making thegearin g five to one, as in the present instance, iive sheets or layers of pulp will be laid on the forming-roll before the cutterplatewill act to cut the tube thus formed.

It will be readily understood that the variation in speed will vary the number of coatings of pulp laid on the forming-roll.

In Fig. 3 I have shown a slight modification of the machine, in which the direction of the press or forming roll B is reversed and having the cutter-plate arranged directly in` front of the receiving-table. In this instance a small weighted roll is mounted directly above the press-roll and in advance of the cutter-plate, so as to properly feed the paper over the cutter-plate and onto the table after the cutter-plaie severs the tube on the roll. Both actuating cams in this instance are mounted on the same shaft; but it will be understood that the details can be modified without departing from the main feature of my invention.

The feed-table F is suspended at its free end by means of links m from a verticallymovable frame M, and said frame is counterbalanced by a weight M, hung from a suitable band or cord passing over a pulley, the opposite end of which band or cord is attached to the frame M. As the lay-boys deliver a sheet of paper or pulp-board to the truck X their operating mechanism tends to swing them beyond the center, and they straighten out in a horizontal plane from their pivotal connection to the feed-table F by the contact with the sheet just laid on the truck. This contact acts as a fulcrum for the lay-boys, and the free end of said feed-table is thereby caused to be raised the thickness of the paper-pulp board. As each successive sheet or board is laid upon the truck the lay-boys assume a horizontal position in the manner just described, and as said lay-boys are raised a distance equal to the thickness of the pulp or paper board at each operation the free end of the feed-table will be raised the same distance and such movement of the feed-table will be held by the counterbalance-weight M. By the means just described the feed-table is maintained in proper position for the lay-boys to deposit the sheets of paper or pulp-board successively on the truck.

It will thus be seen that I can roll the pulp on a cylinder or drum, and after a certain number of layers of pulp have been placed on the roll the tube thus formed may be severed automatically, removed from the roll, and deposited in piles either on a truck or on the floor at the side of the machine. The sheets of paper-pulp are cut uniformly, and the edges are comparatively clean.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. The combination in a pulp-board or paper making machine, a roll upon which the paper or paper-pulp is laid, a pivoted cutterblade, means for actuating the said cutterblade to throw it toward and from said roll, means for feeding the cut paper or pulp away from the cutter-blade, comprising a pivoted frame, a counterbalance for said frame, and a lay-boy pivoted to said frame for transferring the sheets from the same, said lay-boy being so pivoted with the frame that its contact with the deposited sheets will tend to lift the frame and permit a partial raising of the same by the Weight of the counterbalance.

2. The combination in a paper or pulpboard making machine, of a roll upon which the pulpl is laid, a pivoted cutter-blade extend- IOO IIO

ing the length of said roll and adapted to sever the pulp laid thereon, an arm carried by said cutter-blade a spring connected to said outter-blade and tending to force it against the roll, a cam contacting with the arm of the cutter-blade whereby the latter is held away from the roll, said cam having a depression for the reception of the end of the cutterblade arm thereby permitting movement of said cutter-blade at regular intervals, means for feeding the sheet of pulp away from the l roll to a frame or feed-table, and a series of lay-boys pivoted to said frame for transferring the sheet therefrom, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

LEONARD ATWOOD.

Witnesses:

MURRAY C. BOYER, Jos-H. KLEIN. 

